Systematic revision of the species of Geomyphilus (Coleoptera: Scarabaeidae: Aphodiinae) of Mexico and neighboring countries with description of a new Mexican species Author Dellacasa, Marco Author Dellacasa, Giovanni Author Skelley, Paul E. Author Gordon, Robert D. text Insecta Mundi 2017 2017-12-29 2017 590 1 19 journal article 10.5281/zenodo.5169501 1942-1354 5169501 749655B7-5F26-4C47-9292-F97C5AAE59FF Geomyphilus ungulatus ( Fall, 1901 ) ( Fig. 51–55 ) Aphodius ungulatus Fall, 1901: 254 ; Schmidt 1922: 336 ( subgenere incerto ). Aphodius ( Chilothorax ) ungulatus ; Dellacasa 1988: 212 . Geomyphilus ungulatus ; Gordon and Skelley 2007: 411 ( lectotype designation). Type locality. Pasadena, California [ U.S.A. ]. Type repository. Museum of Comparative Zoology. Harvard University, Cambridge. MA ( U.S.A. ) ( type not examined). Redescription. Length 5.0–6.0 mm; oblong, moderately convex, moderately shiny, glabrous. Head and pronotum piceous; clypeal margin and pronotal sides shadowy reddish; elytra dirty yellow with a lateral fuscous shade widened from shoulder to beyond the middle; legs pale brown; antennal club fuscous. Head with epistome feebly convex, rather evenly, moderately punctured; punctation distally almost granulo-rugose, finer and sparser on disc; clypeus broadly sinuate at middle, distinctly angulate at sides, thinly bordered, edge slightly reflexed, finely and sparsely fimbriate laterally; genae obtusely round, elongately ciliate, protruding from the eyes; frontal suture obsolete; front moderately evenly punctured. Pronotum transverse, feebly depressed near hind angles, dually punctured; large punctures, three times larger than small ones, close and coarse on sides, lacking on disc; small punctures dense and deeper on sides, sparse and superficial on disc; lateral margins slightly arcuate, thinly bordered, edge sparsely shortly fimbriate; hind angles obtuse; base almost regularly arcuate, thickly bordered toward hind angles, thinly bordered medially. Scutellum flat, coarsely densely punctured on basal half. Elytra oval, scarcely broader posteriorly, finely striate; striae superficially not closely punctured, subcrenulate; interstriae almost flat, strongly alutaceous on preapical declivity, finely irregularly punctured. Hind tibiae upper spur shorter than first tarsal segment; latter as long as following two segments combined. All claws very slender and exceptionally elongate. Male: head and pronotum relatively less convex and less coarsely punctured; aedeagus Fig. 54–55 . Female: head and pronotum relatively more convex and more coarsely punctured. Material examined. U.S.A. : California : Cypress Co. , 22.XI.1930 , leg. A. C. Davis , hole of Citellus ( 1 ex. , DCGI ) ; Rt. 71 16.22 mi. fr. San Bernardino County line, Riverside Co. , 03.X.1972 , leg. J. Saulnier , refuge chamber of Thomomys bottae (8 exx., DCGI ) . Distribution. U.S.A. ( California ). Biology. Apparently a rodent associate species, collected from November to February.